APA-viite (7. p.)
ebrary, Inc. (2005). Animal care and management at the National Zoo: Final report. National Academies Press.
Chicago-viite (17. p.)
ebrary, Inc. Animal Care and Management at the National Zoo: Final Report. Washington, D.C.: National Academies Press, 2005.
MLA-viite (9. p.)
ebrary, Inc. Animal Care and Management at the National Zoo: Final Report. National Academies Press, 2005.
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